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Commit Graph

319 Commits

Author SHA1 Message Date
Nikos Mavrogiannopoulos
38aef6dc45
libssh2: return CURLE_UPLOAD_FAILED on failure to upload
This brings its in sync with the error code returned by the
libssh backend.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
2017-12-01 17:35:15 +01:00
Nikos Mavrogiannopoulos
75427291e5
libssh2: send the correct CURLE error code on scp file not found
That also updates tests to expect the right error code

libssh2 back-end returns CURLE_SSH error if the remote file
is not found. Expect instead CURLE_REMOTE_FILE_NOT_FOUND
which is sent by the libssh backend.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@redhat.com>
2017-12-01 17:35:15 +01:00
Nikos Mavrogiannopoulos
c92d2e14cf
Added support for libssh SSH SCP back-end
libssh is an alternative library to libssh2.
https://www.libssh.org/

That patch set also introduces support for ECDSA
ed25519 keys, as well as gssapi authentication.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@redhat.com>
2017-12-01 17:35:14 +01:00
Daniel Stenberg
c79b2ca03d
ssh: remove check for a NULL pointer (!)
With this check present, scan-build warns that we might dereference this
point in other places where it isn't first checked for NULL. Thus, if it
*can* be NULL we have a problem on a few places. However, this pointer
should not be possible to be NULL here so I remove the check and thus
also three different scan-build warnings.

Closes #2111
2017-11-25 22:52:36 +01:00
Daniel Stenberg
0d85eed3df
Curl_timeleft: change return type to timediff_t
returning 'time_t' is problematic when that type is unsigned and we
return values less than zero to signal "already expired", used in
several places in the code.

Closes #2021
2017-10-28 10:40:51 +02:00
Daniel Stenberg
5d543fe906 time: rename Curl_tvnow to Curl_now
... since the 'tv' stood for timeval and this function does not return a
timeval struct anymore.

Also, cleaned up the Curl_timediff*() functions to avoid typecasts and
clean up the descriptive comments.

Closes #2011
2017-10-25 18:48:05 +02:00
Daniel Stenberg
e5743f08e7
code style: use spaces around pluses 2017-09-11 09:29:50 +02:00
Daniel Stenberg
6b84438d9a
code style: use spaces around equals signs 2017-09-11 09:29:50 +02:00
Viktor Szakats
b7b4dc0d49 ssh: add the ability to enable compression (for SCP/SFTP)
The required low-level logic was already available as part of
`libssh2` (via `LIBSSH2_FLAG_COMPRESS` `libssh2_session_flag()`[1]
option.)

This patch adds the new `libcurl` option `CURLOPT_SSH_COMPRESSION`
(boolean) and the new `curl` command-line option `--compressed-ssh`
to request this `libssh2` feature. To have compression enabled, it
is required that the SSH server supports a (zlib) compatible
compression method and that `libssh2` was built with `zlib` support
enabled.

[1] https://www.libssh2.org/libssh2_session_flag.html

Ref: https://github.com/curl/curl/issues/1732
Closes https://github.com/curl/curl/pull/1735
2017-08-17 03:32:00 -04:00
Daniel Stenberg
ff50fe0348
strtoofft: reduce integer overflow risks globally
... make sure we bail out on overflows.

Reported-by: Brian Carpenter
Closes #1758
2017-08-14 23:33:41 +02:00
Daniel Stenberg
4dee50b9c8 timeval: struct curltime is a struct timeval replacement
... to make all libcurl internals able to use the same data types for
the struct members. The timeval struct differs subtly on several
platforms so it makes it cumbersome to use everywhere.

Ref: #1652
Closes #1693
2017-07-28 15:51:25 +02:00
Max Dymond
c75f63d7c4 handler: refactor connection checking
Add a new type of callback to Curl_handler which performs checks on
the connection. Alter RTSP so that it uses this callback to do its
own check on connection health.
2017-06-30 10:17:27 +02:00
Daniel Stenberg
59cc0234e5 ssh: fix 'left' may be used uninitialized
follow-up to f31760e63b

Reported-by: Michael Kaufmann
Bug: https://github.com/curl/curl/pull/1495#issuecomment-303982793
2017-05-25 13:02:29 +02:00
Daniel Stenberg
f31760e63b ssh: ignore timeouts during disconnect
... as otherwise it risks not cleaning up the libssh2 handle properly
which leads to memory leak!

Assisted-by: Joel Depooter

Closes #1495
Closes #1479

Bug: https://curl.haxx.se/mail/lib-2017-04/0024.html
2017-05-20 11:22:20 +02:00
Daniel Stenberg
31b39c40cf multi: use a fixed array of timers instead of malloc
... since the total amount is low this is faster, easier and reduces
memory overhead.

Also, Curl_expire_done() can now mark an expire timeout as done so that
it never times out.

Closes #1472
2017-05-10 12:55:36 +02:00
Daniel Stenberg
eab6732fde ssh: fix compiler warning from e40e9d7f0d 2017-05-02 08:32:04 +02:00
Daniel Stenberg
e40e9d7f0d buffer: use data->set.buffer_size instead of BUFSIZE
... to properly use the dynamically set buffer size!
2017-05-01 22:55:29 +02:00
Marcel Raad
e358a626f8
ssh: fix narrowing conversion warning
'left' is used as time_t but declared as long.
MinGW complains:
error: conversion to 'long int' from 'time_t {aka long long int}' may alter
its value [-Werror=conversion]
Changed the declaration to time_t.
2017-03-30 18:45:28 +02:00
Sylvestre Ledru
66de563482 Improve code readbility
... by removing the else branch after a return, break or continue.

Closes #1310
2017-03-13 23:11:45 +01:00
Jean Gressmann
af30f1152d sftp: improved checks for create dir failures
Since negative values are errors and not only -1. This makes SFTP upload
with --create-dirs work (again).

Closes #1269
2017-02-20 08:01:53 +01:00
Daniel Stenberg
f44cf7914f ssh: inhibit coverity warning with (void)
CID 1397391 (#1 of 1): Unchecked return value (CHECKED_RETURN)
2016-12-20 14:46:47 +01:00
Daniel Stenberg
1c3e8bbfed checksrc: warn for assignments within if() expressions
... they're already frowned upon in our source code style guide, this
now enforces the rule harder.
2016-12-14 01:29:44 +01:00
Daniel Stenberg
b228d2952b checksrc: stricter no-space-before-paren enforcement
In order to make the code style more uniform everywhere
2016-12-13 23:39:11 +01:00
Alex Rousskov
cb4e2be7c6 proxy: Support HTTPS proxy and SOCKS+HTTP(s)
* HTTPS proxies:

An HTTPS proxy receives all transactions over an SSL/TLS connection.
Once a secure connection with the proxy is established, the user agent
uses the proxy as usual, including sending CONNECT requests to instruct
the proxy to establish a [usually secure] TCP tunnel with an origin
server. HTTPS proxies protect nearly all aspects of user-proxy
communications as opposed to HTTP proxies that receive all requests
(including CONNECT requests) in vulnerable clear text.

With HTTPS proxies, it is possible to have two concurrent _nested_
SSL/TLS sessions: the "outer" one between the user agent and the proxy
and the "inner" one between the user agent and the origin server
(through the proxy). This change adds supports for such nested sessions
as well.

A secure connection with a proxy requires its own set of the usual SSL
options (their actual descriptions differ and need polishing, see TODO):

  --proxy-cacert FILE        CA certificate to verify peer against
  --proxy-capath DIR         CA directory to verify peer against
  --proxy-cert CERT[:PASSWD] Client certificate file and password
  --proxy-cert-type TYPE     Certificate file type (DER/PEM/ENG)
  --proxy-ciphers LIST       SSL ciphers to use
  --proxy-crlfile FILE       Get a CRL list in PEM format from the file
  --proxy-insecure           Allow connections to proxies with bad certs
  --proxy-key KEY            Private key file name
  --proxy-key-type TYPE      Private key file type (DER/PEM/ENG)
  --proxy-pass PASS          Pass phrase for the private key
  --proxy-ssl-allow-beast    Allow security flaw to improve interop
  --proxy-sslv2              Use SSLv2
  --proxy-sslv3              Use SSLv3
  --proxy-tlsv1              Use TLSv1
  --proxy-tlsuser USER       TLS username
  --proxy-tlspassword STRING TLS password
  --proxy-tlsauthtype STRING TLS authentication type (default SRP)

All --proxy-foo options are independent from their --foo counterparts,
except --proxy-crlfile which defaults to --crlfile and --proxy-capath
which defaults to --capath.

Curl now also supports %{proxy_ssl_verify_result} --write-out variable,
similar to the existing %{ssl_verify_result} variable.

Supported backends: OpenSSL, GnuTLS, and NSS.

* A SOCKS proxy + HTTP/HTTPS proxy combination:

If both --socks* and --proxy options are given, Curl first connects to
the SOCKS proxy and then connects (through SOCKS) to the HTTP or HTTPS
proxy.

TODO: Update documentation for the new APIs and --proxy-* options.
Look for "Added in 7.XXX" marks.
2016-11-24 23:41:44 +01:00
Daniel Stenberg
0649433da5 realloc: use Curl_saferealloc to avoid common mistakes
Discussed: https://curl.haxx.se/mail/lib-2016-11/0087.html
2016-11-11 10:03:48 +01:00
Daniel Stenberg
50aded1cd4 ssh: check md5 fingerprints case insensitively (regression)
Revert the change from ce8d09483e but use the new function

Reported-by: Kamil Dudka
Bug: ce8d09483e (commitcomment-19666146)
2016-11-07 12:54:40 +01:00
Daniel Stenberg
811a693b80 strcasecompare: all case insensitive string compares ignore locale now
We had some confusions on when each function was used. We should not act
differently on different locales anyway.
2016-10-31 08:46:35 +01:00
Daniel Stenberg
502acba2af strcasecompare: is the new name for strequal()
... to make it less likely that we forget that the function actually
does case insentive compares. Also replaced several invokes of the
function with a plain strcmp when case sensitivity is not an issue (like
comparing with "-").
2016-10-31 08:46:35 +01:00
Daniel Stenberg
ce8d09483e SSH: check md5 fingerprint case sensitively 2016-10-31 08:46:35 +01:00
Daniel Stenberg
46133aa536 escape: avoid using curl_easy_unescape() internally
Since the internal Curl_urldecode() function has a better API.
2016-10-31 08:46:35 +01:00
Daniel Stenberg
8a6e89a9eb select: switch to macros in uppercase
Curl_select_ready() was the former API that was replaced with
Curl_select_check() a while back and the former arg setup was provided
with a define (in order to leave existing code unmodified).

Now we instead offer SOCKET_READABLE and SOCKET_WRITABLE for the most
common shortcuts where only one socket is checked. They're also more
visibly macros.
2016-10-18 11:05:45 +02:00
Jay Satiro
2c36cb1cbb http2: Remove incorrect comments
.. also remove same from scp
2016-08-25 02:43:19 -04:00
Daniel Stenberg
bde2f09d5e multi: make Curl_expire() work with 0 ms timeouts
Previously, passing a timeout of zero to Curl_expire() was a magic code
for clearing all timeouts for the handle. That is now instead made with
the new Curl_expire_clear() function and thus a 0 timeout is fine to set
and will trigger a timeout ASAP.

This will help removing short delays, in particular notable when doing
HTTP/2.
2016-08-04 00:26:01 +02:00
Daniel Stenberg
6655e30691 conn: don't free easy handle data in handler->disconnect
Reported-by: Gou Lingfeng
Bug: https://curl.haxx.se/mail/lib-2016-06/0139.html
2016-06-29 23:13:09 +02:00
Daniel Stenberg
b6ddc0ac07 SFTP: set a generic error when no SFTP one exists...
... as otherwise we could get a 0 which would count as no error and we'd
wrongly continue and could end up segfaulting.

Bug: https://curl.haxx.se/mail/lib-2016-06/0052.html
Reported-by: 暖和的和暖
2016-06-28 15:30:17 +02:00
Daniel Stenberg
80388edefc typedefs: use the full structs in internal code...
... and save the typedef'ed names for headers and external APIs.
2016-06-22 10:28:41 +02:00
Daniel Stenberg
434f8d0389 internals: rename the SessionHandle struct to Curl_easy 2016-06-22 10:28:41 +02:00
Daniel Stenberg
ddf25f6b28 ssh: fix version number check typo 2016-05-30 08:14:27 +02:00
Daniel Stenberg
e51798d002 ssh: fix build for libssh2 before 1.2.6
The statvfs functionality was added to libssh2 in that version, so we
switch off that functionality when built with older libraries.

Fixes #831
2016-05-29 00:20:14 +02:00
Daniel Stenberg
4f45240bc8 lib: include curl_printf.h as one of the last headers
curl_printf.h defines printf to curl_mprintf, etc. This can cause
problems with external headers which may use
__attribute__((format(printf, ...))) markers etc.

To avoid that they cause problems with system includes, we include
curl_printf.h after any system headers. That makes the three last
headers to always be, and we keep them in this order:

 curl_printf.h
 curl_memory.h
 memdebug.h

None of them include system headers, they all do funny #defines.

Reported-by: David Benjamin

Fixes #743
2016-04-29 22:32:49 +02:00
Daniel Stenberg
a71012c03e code: style updates 2016-04-03 22:38:36 +02:00
Daniel Stenberg
575e885db0 multi: turn Curl_done into file local multi_done
... as it now is used by multi.c only.
2016-03-30 07:52:28 +02:00
marquis-de-muesli
39bb73665c SSH: new CURLOPT_QUOTE command "statvfs"
usage: "statvfs path"
returns remote file system statistics
2016-03-27 17:52:16 +02:00
marquis-de-muesli
f9d27e0f8e SSH: support CURLINFO_FILETIME 2016-03-27 17:52:16 +02:00
David Byron
cae21ffc16 SCP: use libssh2_scp_recv2 to support > 2GB files on windows
libssh2_scp_recv2 is introduced in libssh2 1.7.0 - to be released "any
day now.

Closes #451
2016-02-14 11:03:07 +01:00
Daniel Stenberg
4af40b3646 URLs: change all http:// URLs to https:// 2016-02-03 00:19:02 +01:00
Kamil Dudka
be538e0766 ssh: make CURLOPT_SSH_PUBLIC_KEYFILE treat "" as NULL
The CURLOPT_SSH_PUBLIC_KEYFILE option has been documented to handle
empty strings specially since curl-7_25_0-31-g05a443a but the behavior
was unintentionally removed in curl-7_38_0-47-gfa7d04f.

This commit restores the original behavior and clarifies it in the
documentation that NULL and "" have both the same meaning when passed
to CURLOPT_SSH_PUBLIC_KEYFILE.

Bug: http://curl.haxx.se/mail/lib-2016-01/0072.html
2016-01-15 10:34:34 +01:00
Daniel Stenberg
c341311a0e Revert "cleanup: general removal of TODO (and similar) comments"
This reverts commit 64e959ffe3.

Feedback-by: Dan Fandrich
URL: http://curl.haxx.se/mail/lib-2015-11/0062.html
2015-11-24 09:36:45 +01:00
Daniel Stenberg
64e959ffe3 cleanup: general removal of TODO (and similar) comments
They tend to never get updated anyway so they're frequently inaccurate
and we never go back to revisit them anyway. We document issues to work
on properly in KNOWN_BUGS and TODO instead.
2015-11-13 16:15:26 +01:00
Daniel Stenberg
c6aedf680f fread_func: move callback pointer from set to state struct
... and assign it from the set.fread_func_set pointer in the
Curl_init_CONNECT function. This A) avoids that we have code that
assigns fields in the 'set' struct (which we always knew was bad) and
more importantly B) it makes it impossibly to accidentally leave the
wrong value for when the handle is re-used etc.

Introducing a state-init functionality in multi.c, so that we can set a
specific function to get called when we enter a state. The
Curl_init_CONNECT is thus called when switching to the CONNECT state.

Bug: https://github.com/bagder/curl/issues/346

Closes #346
2015-10-15 23:32:19 +02:00